Bobbin removing device



Filed Sept. 19, 1934 ll/I INVENTO CT ATTORNEYS a it are pivotallv co 1' enema Au 13, 1935 UNITED STATES PATENT OFFICE Yanhn Elmer Wheeler, Rome, Ga., nssignor to Tubile Chatillon Corporation, a corporation of Delaware Application, September 19, 1934, Serial No. 144,741

6 Claims. (01. 254-131) This invention relates to bobbin removing devices, and particularly to devices for removing rotating bobbins fromtheir holders or carriers, and has for itsobject the provision of an improved device of this character. The invention is specially applicable to devicesi'or removing or pulling" bobbins from artificial silk spinning machines and similar apparatus while the bobbins are rotating v The b'obbin removing device oi. the invention comprises an expansible bobbin gripping element adapted to be inserwd into the hollow interior of a rotating bobbin. The gripping element is rotat ably mounted on a suitable spindle or shaft, and is later movable with respect to .a relatively ed part of the device, such as a stop member abutting against the bobbin holder. When con- .tracted'the gripping, element (rted within the bobbin) does not engage the bobbin, but when expanded the element engages and rotates with the bobbin. Late movement of the element, when expanded. and engaging the bobbin, serves to remove the bobbin fromits rotating holder.

The invention will be hotter understood from the following description taken in conjunction with the nccomponying drawing, in which Fig. l is a plan of a device embodying the in vention;

Fig. 2 is e sectional elevation of the device taken substantieily alone thellne cl-i2 oi Fig. l; and

Fig. 3% is o, sectional elevation of the device taken on the line 8-3 of Fig. 2.

The device illustrated in the drawing comprises a errippinpelement including segments 5 wmch, when'eseemhled, form an annular unit having a grooved cylindrical periphery into which is tightly fitted a bend of elastic rubber it. Two annulerlv spaced rollers l are arinllv mounted in each seemerit. one side oi the assembly of segments abuts against the face of o bearing flange ti cecured by eetscrews ii to a tubular spindle or t it. The other'siole of the asselv-ot seg nts abuts against the face of o bearing flange,

ii, operatively connected to the segments by pins ll projectirn, into redial slots it in the sides of the scents. The cylindrical bearing portion of the flange ll surrounds a flanged been it t i edg'on one endoi" the spindle it. i A cone ill is slidably mounted on the spindle i0,

bus r I FI concentrically ml; the bobbin gripping element. The cone has two dietricaily posi- :2 from its larger end through or sport in the head of the flange t. ted at their outer tio&ed it (secured thereto or integral therewi onion '1 'ends to the bifurcatedends of a'lever II. An

elastic rubber band It passes around the bi1ur-- cated ends of the lever I1 and the end or the .spindle l0, and carries at one end (adjacent the bushing M). a rotatably mounted stop member 2|.- The other end of the rod 20 is pivoted at 22 to an operating lever 23. A link 24 pivotally connects one end of the. lever lt to the lever ll. I r

In operating the device to remove a rotating bobbin 25 from its rotating holder or carrier 26, the gripping element is inserted within the hol-= low interior of the bobbin. With one hand the operator grasps the handle it and lever ll, 1- ing the lever towards the handle (against the tension of the rubber band. it). The cone to is thereby slid along the spindle it (towards the left in the drawing) and moves the rollers l outwardly until the resulting expansion of bd 6 brings it into operative contact with t inside of the bobbin. The gripping element then spindle iii until the rotatably mounted stop m her it engages the head or'enol of the bobhm holder 26. In position the stop meer it rotates freely with the holder. Further-pith on: the lever it in the v or", direction then s: w: the bobbin from its holder. The bobbin is then readily removed from the gripping elet bv re= lease of the lever ll.

.Tl'he expansible gripping element, while relatively fixed to the tubular spindle, is freely rotatable about the spindle, thus permitting rotation of the element when gripping the rota bobbin while the spindle is held relatively tionary. The rollers l further permit free rotation of the gripping element when the'cone l by its wedging action iorces the rollersand aciat/ad segments outwardly into their expanded positions. When the wedging action of the cone it is withdrawn (by the tension of the rubber band it when the lever ll is rele. the peripheral rubber band 6 promptly contacts the gripping element. The rubber band t also provides a suitable iristion contact between the gripping element and the inside of the bobbin. The stop memberjl rotates freely on the rod 2| v'vhenin ena s mmt,

with the rotating bobbin holder 26. When thus engagedwith the holder 26, further lateral movement of the rod 20 is arrested, and the gripping element and engaged bobbin can then be pulled laterally along the rod by the lever 23 and associated link mechanism. The radially directed slots l 3 of the segments 5 permit outward and inward movement of the segments (in expanding 'and contracting the bobbin gripping element) while maintaining through the cooperating pins l2 the necessary operative connection between the segments and the bearing flange II.

I claim: ,7

1. A device for removing a bobbin from a rotating holder comprising an expansible bobbin gripping element rotatably mounted on a spindle, said element including a plurality of annularly assembled segments peripherally surrounded by an elastic member and circumferentially spaced rollers axially mounted in the segments, means for moving said rollers and associated segments outwardly toexpand the gripping element, and meansfor moving the gripping element longitudinally with respect to a relatively fixed part of the device. l

2. A device for removing a bobbin from a rotating holder comprising an expansible bobbin grip ping element rotatably mounted on a tubular spindle, said element including a plurality of annularly assembled segments peripherally surrounded by an elastic member and circumferentially spaced rollers axially mountedin the segments, means for expanding said element by moving said rollers outwardly, a rod slidably mounted in said tubular spindle, a stop member carried by said rod, and means for moving said gripping element away from said stop member when lateral movement -of the stop member is arrested.

3. A device for removing a bobbin from a rotating holder comprising an expansible bobbin gripping element rotatably mounted on 'a tubular spindle, means for expanding said element so that it will engage the inside of a bobbin, aerod slidably mounted in said tubular spindle, a stop member carried by said rod, and means for moving said gripping element away ,from said stop "member when lateral movement of the stop memberis arrested.

4. A device for removing a bobbin from a rotating holder comprising a tubular spindle, an expansiblebobbin gripping element mounted on said spindle, means for expanding said element so that it will engage the inside of a bobbin, a rod carried within said spindle, a rotatable stop member at one end of said rod, and means associated with the other end of said rod for moving said gripping element laterally along the rod when lateral movement of the stop member is arrested.

5. A device for removing a bobbin from a rotating holder comprising an-expansible bobbin gripping element rotatably mounted on a spindle, said element including a plurality of annularly assembled segments peripherally surrounded by an elastic member and circumferentially spaced rollers axially mounted in the segments, a cone slidably mounted on said spindle, means for sliding said cone into wedging engagement with said rollers to move the rollers and associated segments outwardly, and means for moving the gripping element longitudinally with respect to a relatively fixed part of the device.

6. A device for removing a bobbin from a rotating holder comprising an expansible gripping element rotatably carried by a tubular spindle said element including a plurality of annularly assembled segments peripherally surrounded by an elastic member and circumferentially spaced rollers axially mounted in the segments, a cone slidably mounted on said spindle, means for sliding said cone into wedging engagement with said rollers to move the rollers and associated segments outwardly, a rod carried within said spindle, a rotatable stop member at one end of said rod, and means associated with the other end of said rod for moving said gripping element laterally along the rod when lateral movement of the stop member is arrested.

VAUGHN EIMER 

